Of the eight richest fundsters in the U.S., six of them share a last name. Meanwhile, another famous fundster has suffered financially thanks to a bad breakup.

Abigail Pierrepont JohnsonFMR (dba Fidelity Investments)Chairman, CEO

Yesterday Forbes revealed its 2018 "Forbes 400" list of the richest people in the U.S. Familiar faces from the mutual fund industry remain on the list.

Abby Johnson, CEO of Fidelity Investments, remains the richest fundster on the list, ranking 28th overall with an estimated net worth of $17.3 billion. Three other members of her family also made the list: her father, Ned Johnson, 57th with $8.6 billion; and her brother Edward Johnson, IV and her sister Elizabeth Johnson, tied for 190th with $3.9 billion.